What if you could go back in time? Last week, I had a chance to visit a place I hadn’t been since 1982, my great-grandmother’s house in Nogales. Arizona. Barely. I say barely, because the house was built before the fence, before the wall, before the border patrol, before the drug trade, before lands south of the border became places from which to run. A fence was ultimately built 50 feet from where the house stood. A few years ago, it became a wall. It was surreal to go back